Home / 7,779.61-11,665.98-2,231.70

Finding the Fourth Proportional to 7,779.61, 11,665.98 and 2,231.70

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Solution

The fourth proportional to 7,779.61, 11,665.98 and 2,231.70 is: 3,346.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.61 : 11,665.98 = 2,231.70 : x
  2. Step 2: Convert to fraction form
    7,779.61/11,665.98 = 2,231.70/x
  3. Step 3: Cross multiply
    7,779.61x = 11,665.98 × 2,231.70
  4. Step 4: Simplify right side
    7,779.61x = 26,034,909.24
  5. Step 5: Solve for x
    x = 26,034,909.24/7,779.61
  6. Step 6: Final answer
    x = 3,346.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.